1. Go to Device Manager in Windows
2. Go to Network Adpaters
3. Look for and double click "Blackberry Device"
4. Go to Advanced Tab
5. Under Network Address ensure the value is the same IP as it's shown in Development area on your phone.

I had a similar issue and when I check here it was checked at "Not Present"

My guess is your USB 2.0 port is being recognized as an aux USB power port... For that reason, unless you turn that off, it makes your 2.0 port limitedly useful, except for certain types of devices, things like Smartphones not one of them, unless you need to charge them